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प्रश्न
Draw a labelled diagram of the human male reproductive system. With the help of this diagram, describe the working of human male reproductive system?
उत्तर
Testes are the primary reproductive organs of human males. They are located in the scrotum outside the body. They produce sperms, which engage into a coiled tube called epididymis and get stored there. Sperms are then carried away through the vas deferens, which joins the urethra. On way to the urethra, sperms also receive secretions from the seminal vesicles and the prostrate gland. The urethra carries sperms to the penis, which opens outside the body.
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संबंधित प्रश्न
What are sexually transmitted diseases?
List the two types of reproduction. Which one of the two is responsible for bringing in more variations in its progeny and how?
Given below are diagrams showing the different stages in the process of fertilisation of an egg. in the human female reproductive tract.
Study the diagrams and answer the questions:
1) Arrange the letters given below each diagram in a logical sequence to show the correct order in the process of fertilisation.
2) Where does fertilisation normally take place? and What is ‘Implantation’ that follows fertilisation?
3) Mention the chromosome number of the egg and zygote in humans.
4) Explain the term ‘Gestation’. How long does Gestation last in humans?
5) Draw a neat, labelled diagram of a mature human sperm.
Where does a fertilised ovum develop into a baby in the human body?
Explain why, a human zygote is more likely to grow into an adult than a frog zygote.
In humans, the fertilization takes place in:
Write two examples of sexually transmitted diseases caused by virus.
Diagram shows the reproductive system of female human beings:
(i) Name the parts numbered 1 to 14.
(ii) Normally, after how many days does an ovary release an egg?
(iii) Where are the sperms released during coitus?
(iv) What is the role of sperms after their ejaculation in vagina?
(v) What is the function of the organ numbered 5?
(vi) What is the gestation period in human?
Define the following:
Parthenogenesis
Answer the following question:
Why are family planning measures needed in our country?
